Water-protector for oil-bearings.



J. E. PIOVESAN. WATER PROTECTOR FOR OIL BEARINGS.

APPLICATION FILED THE. 3, 1912.

Patented Sept. 1'7, 1912.

2 SHEETS-SHEET 1.

Joly; fiz'aueaan COLUMBIA PLANOORAPH C0..WA5H1NLITON. D. t.

J. E. PIOVESAN. WATER PROTECTOR FOR OILBEARINGS.

APPLICATION FILED FEB. 3, 1912.

Patented Sept. 17, 1912.

2 SHEETS-SHEET 2.

COLUMBlA PLANonRAPH COUWASHINGTON, D. c.

1 rangement described will cooperate in per- JOSEPH E. PIOVESAN, OFGLASSPORT, PENNSYLVANIA.

WATER-PROTECTOR FOR, GIL-BEARINGS.

nosaese.

Specification of. Letters Patent.

Application filed February 3, 1912. 2 Serial No. 675,201.

To all whom it may concern:

Be it known that I, J osnrrr E. PIovnsAN, a citizen of the UnitedStates, residing at Glassport, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements: inater-Protectors for Oil-Bearings, of which the following is aspecification.

This invention relates to improvements in a water protector for oilbearings and more specifically to means for preventing the access ofwater into the oil bearings connected to a pump mechanism in which apiston rod or shaft is to be immersed in oil to lessen friction.

In its broadest aspect my invention consists in a suitable deviceintended to engage the walls of the oil box through which the shaft orpiston passes and includes means for holding said device in position,the arforming the function withthe condenser of the pump provided withmy invention.

The object of my invention consists in providing a simple, inexpensiveand highly efficient protector for oil bearings, which is intended to bea substitute for packing in that it is eifective in providing a watertight joint between the oil box, the shaft or piston passing through theoil box, and the water chamber of the pump.

The device may be easily attached to a pump and may be readily removedfrom operative position.

"With the above and other objects in view my invention consists in thecombination, arrangement and details of construction shown in thedrawing and then more particularly pointed out in the appended claims.

Similar reference characters designate similar parts throughout therespective views of the drawings, wherein,

Figure 1 is a side elevation, partly in section of a vacuum condensingpump in which my protector for oil bearings is vertically disposed, Fig.2 is a vertical elevation of the protector which I have devised, Fig. 3is a cross sectional view of the protector taken on the line AA of Fig.4, Fig. 4 is a top plan view of the protector, Fig. 5 is a top plan viewof the leather disks form-. ing part of the protector, and Figs. 6 and 7are respectively top plan detail views of brass plates cooperating toclamp the leather disks together.

Referring to the drawings, which are merely illustrative of theinvention, a vacuum condensing pump 1-is shown in Fig. 1, as one type ofpump to which my protector may be applied, it being understood PatentedSept. 17,1912. if

that my protector may be mounted within 1 pumps of differentconstruct-ions without departing in principle from the invention to bedisclosed.

I will describe the parts of the vacuum condensing pump and will thenshow the .1

manner in which my protector is attached and mounted therein.

The pump 1 is composed of the condenser 2 at the upper end of which awater conducting pipe 8 is suitably connected, which as clearly shown inFig. 1, is also connected by an offsetbranch to a pipe 5 connected by anelbow 6 to a pump 8 in the conventional manner, said pipe 3 leading to ariver or any other source of water supply. fan 7 works in the pump 8 inthe manner known to those skilled in the art to force water through thepipe 9 which is also connected at 10 tothe upper end of the con- Arotary denser 2. Said pipes 3 and 9 have vertical downwardly extendingoflsetsll and 12 disposed in the condenser 2, and conducting Water insuch a way that the rotary fan 13, disposed in chamber 14 of the lowerend of the shaft 15 in order that the pump may begin its work. The shaft15 projects at opposite sides of the condenser 2 and passes through thestuffing boxes designated 16 and 17 respectively, which are mounted insaid condenser, as shown in Fig. 1. The glands 18 and 19 arescrew-threaded into the stuii ing boxes 16 and 17 in the conventionalmanner to compress the packing 20 and 21 the condenser 2 may be set inmotion to turn disposed in said stufling boxes respectively. 1

The stuffing boxes 16 and 17 project downwardly ofthe condenser 2 intothe chambers 22 and 28 respectively in each of which my protector ismounted in operative position,

said chambers being fastened to said condenser by any suitable means,such as bolts 24.

- Secured by any suitable means such as bolts 25 upon the walls of thechambers 22 and 23 respectively are the horizontally disposed oil boxes26 and 27 respectively adapted to be filled with oil surrounding the inclosed shaft 15.

Disposed in a suitable compartment 29 at the point where the vacuum pumpis connected to the pump 8 is one of the protectors designates asuitable water supply pipe to which are connected the valve controlledpipes 31 and 32 respectively, which pipesl empty into the stuffing boxes17 and 16, as:

clearly shown in Fig. 1. J 33 indicates a discharge pipe through i whichthe water pumped by the rotary fan;

13 is caused to pass.

Having described the parts of the vaucum condensing pump, I will nowdescribe the protector which consists in two rigid disks 34 and 35respectively, which may be made out of any suitable material butpreferably 1' brass segments 39 and 40, which openings out of leatherand which are formed of equal diameter and with a central opening I 36through which the shaft 15 may snugly pass The disks 34 and 35 are splitrespectively at 37 and 38 in order that they may readily be mounted uponthe shaft without causing the removal of any parts. It will beunderstood that the slits 37 and 38 are disposed radially of each diskand that when said disks are clamped the disks will be so disposed inoverlying position that the slits 37 and 38 will be in alinement, as

' member.

clearly shown in Fig. 5, to substantially form a diameter line. Anysuitable means may be provided for causing said disks 34 and 35 toreadily engage each other so as to form substantially a singlesolid-cylindrical By way of illustration I have provided brass bearingplates composed of two sections having their ends overlapped, saidplates being substantially cylindrical in contour and arranged tooverlie each of the disks 34 and 35. In Figs. 6 and 7 are shown thebrass sections 39 and 40 which are shown in the shape of segments of acylinder, the segment 40 being formed with the stepped portions 41 and42 formed each with an opening 43 adapted to register each with theopenings 44 formed in the brass segment 39. It will be understood thatthere are two cylindrical brass plates which have segments similar tothese shown in said figures, said 1 segments being joined by causing theshoulders 44 formed by the portions 41 and 42 of the segment 40 toengage the edges 45 and 46 of the segment39, so that the portions 41.and 42 of segment 40 may overlie the ends of the segment 39 having theedges 45 and 46; segments 39 and 40 are formed with the dished concaveopenings 47 and 48 respectively which will form the opening 49sufiiciently large to admit the shaft 15 to be surrounded by the leatherdisks 34 and 35. The segments 39 and 40 having been joined in the mannerstated, they will be applied centrally against one of the leather disksand the screw bolts 50 will then be passed through the openings 43 and44 respectively of the segments 40 and 39 and through the leather disks34 and 35 so as to project through the opposite disk. The similarsegments 39 and 40 hav- 1 ing been joined will be mounted cent-rallyupon said last named disk and the overlapping stepped portions 41 and42of the segments 40 will be disposed in such a position that theprojecting ends of the bolts 50 may i pass through the openings 44 and43 respectively of the segments 39 and 40 and said bolts will projectthrough said last named openings to receive the nuts 51 which will bescrew-threaded thereupon and against the bottommost convolution 52 ofeach of the coil springs 53 and 54 respectively, shown clearly in Fig.2. Through 1 the openings 55 and 56 respectively of the are verticallydisposedat diametrically opposite points will be passed brass screwbolts 57 which will initially pass through the openings of one of thebrass plates, through A the two leather disks and through the oppositelyarranged brass plate and projecting therefrom will receive the brassnuts 58. The

brass nuts 58 and the nuts 51 will be screwed home tightly to cause thebrass plates formed by the segments 39 and 40 to rigidly clamp the twoleather disks 34 and 35 together. The oppositely arranged coil springs53 and 54 mounted upon one of the brass plates are intended to engagethe glands of the stufling boxes 16 and 17 mounted in the condenser 2,as shown in Fig. 1. l j

The protector composed of the leather disks, brass plates and springs 54and 55 will be placed in operative position by passing the split leatherdisks and brass plates attached thereto over the shaft 15, the latterfitting the openings 36 in said disks snugly,

and by causing one of the brass plates to overlie the wall interveningbetween the compartment 22 and the oil. box 26 and the leather diskswill preferably fit snugly in the chamber 22, the opening in which may ibe cylindrical to accommodate them. The free ends of the coiled springs53 and 54 will be clamped bythe nuts 60 against the bolts 59 mountedupon the glands 18 and 19 screw-threaded respectively into the stuffingboxes 16 and 1.7. After the glands have been screwed home in theirstufling boxes,

as shown in Fig. 1, the end convolutions of the springs will be securedthereto by said nuts 60 and there will be sufficient tension I in saidsprings to hold the protector in contact with the adjacent walls of theoil boxes. For the purpose of creating a water seal in the stutlingboxes, when the air compress- I ing agency is at work forcing air out ofthe condenser 2 into and through the pipe 33,

water maybe caused to engage the packing 16 and 17 disposed in andcompressed by the glands of *said stuffing boxes, through the' valvecontrolled pipes 31 and 32 leading air from passing into and through thestuifing boxes and by surrounding shaft 15 as it rotates finding its wayinto the chamber 14 of the condenser 2, a tendency which would operateto destroy the vacuum in said chamber necessary to admit water thereintothrough pipes 3 and 10. Owing to the great speed wit-h which said shaftis rotating when pumping, it has been found in practice that the waterin the packing and stufiing boxes, would by centrifugal action be spreadout in films upon the shaft and be carried by the rotating shaft intothe oil boxes 26 causing said water to mix with the oil with the knowndeleterious effect. This would be the case were it not for theprotectors which I have mounted in the chambers 22 and 23 andsurrounding the shaft immediately where the oil boxes are connected tosaid chambers. The leather disks snugly embracing the shaft will preventthe access of the films of water into the oil-boxes and in thisconnection it should be noticed that should the glands be partiallyunscrewed so as to allow the packing slightly to distend, the springs 53and 54% will only be compressed more firmly and thereby clamp said disksmore rigidly against the shaft and said plates against the wall of theoil chamber, at the very moment the water in the oil chamber will engagea larger surface of the rotating shaft. The springs are thereforearranged to prevent the protectors from moving away from the oilbearings. The brass plates will withstand the corrosive action of thewater. The protector mounted in the compartment 29 is connected in themanner above described to the gland 61 of the stufiing box 62, and isdisposed at the point of con-- nection between the pump and the oil-box27 which it protects against water entering at the side of the oil-boxopposite the protector mounted in the chamber 23. By reason of thearrangement of the protector relatively to the st-ufiing boxes, theexpense of providing packing in the condenser is avoided, a practicewhich .does not result in keeping the oil out of the bearings.

Numerous modifications may be resorted to in practice without departingin principle from the invention disclosed.

I claim and desire to secure by Letters Patent:

1. In combination with a shaft, a water chamber in which said shaft ismounted, and a shaft bearing mounted in said water chamber, a housingsurrounding said shaft hearing secured to said chamber, a plurality-offlexible members disposed within said housing and snugly embracing saidshaft, means for rigidly joining said members, an oil box against a wallof which said members bear, and means connected to said shaft bearingand said joined members for holding the latter against said wall.

2. In combination with a shaft, a water chamber, a stufling box in saidchamber surrounding said shaftand having a water charged packing, ahousing mounted upon said water chamber, an oil box for said shaftmounted upon said housing, a plurality of leather disks snugly embracingsaid shaft, segmental plates disposed in overlapping relation againstthe sides of the outer disks, means for clamping said plates againstsaid disks and means mounted 011 the stuffing box engaging said disks tohold them against a wall of said oil-box.

3. In combination with a shaft, a water chamber, a stuffing box in saidchamber, surrounding said shaft and having a water charged packing, ahousing mounted upon said water chamber, an oil box for said shaftmounted upon said housing, a plurality of leather disks snugly embracingsaid shaft, segmental brass plates disposed in overlapping relationagainst the sides of the outer disks, means for clamping said platesagainst said disks, and means carried by said stuffing box forresiliently holding said disks against the wall of the oil box.

4. In combination with a shaft, a water chamber, a stufling box in saidchamber surrounding said shaft and having a water charged packing, ahousing mounted upon said water chamber, an oil box for said shaftmounted upon said housing, a plurality of split leather disks snuglyembracing said shaft, a pair of brass segmental plates, one plate ofeach pair formed with stepped segmental ends arranged to overlie theends of the other plate to form a cylinder, each cylinder arranged tooverlie the surface of an outer leather disk, screw bolts tapped throughthe opposing plates and through the leather disks to join the latter,and means mounted in said housing for resiliently holding said disksagainst the wall of an oil box.

5. In combination with a shaft, a water chamber, a stuffing box in saidchamber surrounding said shaft and having a water charged packing, ahousing mounted upon said water chamber, an oil box for said shaftmounted upon said housing, a plurality of leather disks snugly embracingsaid shaft, a pair of brass segmental plates, one plate of each pairformed with stepped ends arranged to overlie the ends of the other plateto form a cylinder, each cylinder arranged to overlie the surface of anouter leather disk, brass screw bolts tapped through the opposing platesand through the leather disks to join the latter, and a plurality ofcoiled springs; secured to one of said cylinders and con-; nected tosaid stuffing box. 7

6.- In combination with a shaft, a water chamber, a stufling box in saidchamber sur- 2 rounding said shaft and having a water; charged packing,a housing mounted upon said water chamber, an oil box for said;' shaftmounted upon said housing, a plu-v rality of split leather disks snuglyembracing, said shaft, a pair of brass segmental plates, one plate ofeach pair formed with stepped ends arranged to overlie the ends of theother plate to form a cylinder, each cylinder arranged to overlie thesurface of an outer leather disk, a plurality of springs connected tosaid stuffing box, brass bolts passing through said plates and disks torigidly join the latter, and brass bolts passing through the steppedportions of said overlapping plates, through said disks, and brass nutsupon the last named bolts engaging the free ends of said springs, saidsprings arranged to hold said disks against a wall of said oil-box.

7. In combination with a shaft, a Water chamber, a stuffing box in saidchamber surrounding said shaft and having a water charged packing, ahousing mounted upon said water chamber, an oil box for sald' shaftmounted upon'said housing, a plurality of leather disks snugly embracingsaid shaft, a pair of brass segmental plates,

I one plate of each pair formed with stepped ends arranged to overliethe ends of the other plate tojforma cylinder, each cylinder arranged tooverlie the surface of an outer leather disk, a lurality of springsconnected to said stu 'ng box, brass bolts passing through said platesand disks to rigidly join the latter, and brass bolts through saidoverlapping plates, through said disks and having their heads engagingthe free ends of said springs, said springs arranged to hold said disksagainst a wall of said oil-box.

8. In a shaft bearing, a shaft, an oil box and a Water chamber, aflexible member embracing said shaft and means for holding said memberadjacent the wall dividing said box and chamber, said means consistingof springs, a stuffing box projecting into said chamber, said springssecured to said stuffing box.

In testimony whereof I aflixmy signature in presence of two Witnesses.

JOSEPH E. PIOVESAN.

Witnesses:

THOMAS CoRooRAN,

W. H. SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. O.

